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• ?No battery?is require so the product is even more safe and stable
  Lightweight， more attractive and compact
  Just needs you to press a built-in button called worm gear plane generator to produce power
• ?energy harvesting technology， the new wireless bell requires a very tiny pressure only 350g
  After receiving signal the receiver emit sound and small light hint
  The receiver features 4 levels of volume and has 38 songs to choose?Inside hidden LED design， funny to use
  Never be afraid of wet hands any more， safe to use always
  The transmission?distance between emitter and receiver is 100m
  The receiver has 3 relay functions， so the transmission distance can be expand to 300 meters

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